Text to Join

Grow your contact list quickly and easily. Collect phone numbers, email addresses, zip codes, and other contact details automatically.

  • Set up automated follow-ups to collect additional information from contacts
  • Sync data with your CRM in real time
  • Rent unlimited keywords and run multiple opt-in campaigns at once
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Who uses text to join?



Political organizations run sms opt-in campaigns to build a list of strong supporters and collect data on them for targeting and mobilization.



Text to join comes handy for nonprofits for running text-to-donate fundraisers, text-to-pledge, and event invitations.



Businesses use text to join to build their sms marketing list and drive promotions, share exclusive offers, and also collect feedback.



Educational institutions sign up students for clubs, administrative communication, and events using a text-to-join service.


Market Research

Market research companies use text to join campaigns to build a database of prospective surveyees for research.



Running text message fundraisers and building supporter databases are how advocacy groups commonly use text to join.

How text to join works

step 1

Set up a keyword

Create a free account and choose a custom keyword of your choice. Rent a number or reuse an existing one.

step 2

Draft your automated response

This is the first message that goes out. You can thank people for joining, let them know about the message and data rates, opt-out details, etc.

step 3

Create follow-up prompts

Craft the subsequent text messages that go after the welcome message to collect additional data.

step 4

Promote your keyword

People text the keyword to the given number to express their interest in joining your sms list.

Get started with text to join today

Sign up to get free credits and take a trial.

CallHub Text to Join features


Get 10DLC registered phone numbers

Maintain texting compliance and achieve higher deliverability and throughput with 10DLC numbers. You can opt for a short code too.

Rent keywords

Rent unlimited keywords

CallHub lets you rent any number of keywords at a fixed rate, no extra or hidden cost. Run multiple sms opt in campaigns simultaneously.

Nudge for opt ins

Set up nudges to complete opt-in

For people who drop off in the middle of the opt-in flow, set up nudges to encourage them to complete the process.

Sync data to CRMs

Sync data with your CRM in real time

All data collected during the opt in process is synced with your database in real time. No manual entry required.

Send personalized follow-up messages

Personalize follow up text messages

Since data is synced in real time, you can personalize the immediate follow-up sms messages with the data you just collected.

Manage Opt-outs

Manage opt outs automatically

Automatically unsubscribe people who respond with keywords like STOP, CANCEL, UNSUBSCRIBE, etc. from your text messaging list. Keep your list clean.

Why choose CallHub?


Unparalleled support

Our support team works round the clock to help you. We have a 94% customer satisfaction rate and respond to queries in less than 3 hours on average.


Competitive pricing

You pay only for the sms text messages you send and receive, nothing extra. You can also choose plans for discounted pricing. Our texting rates are unbeatable.

Detailed Insights

Real time reporting

Get insights into your text to join campaigns as they’re running with real time reports. Act on these insights to stay on track and get the best results.

See how 350 used CallHub’s text to join to organize the climate strike

MN350 built an engaged list of 2919 young climate activists, maintained constant contact, and organized them to take further action towards climate justice.


Start growing your text message list with SMS opt-in today

Get started for free. No credit card required.

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